package com.changgou.file.controller;

import com.changgou.entity.Result;
import com.changgou.entity.StatusCode;
import com.changgou.file.util.FastDFSClient;
import com.changgou.file.util.FastDFSFile;
import org.apache.commons.lang.StringUtils;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;

@RestController
@RequestMapping("/file")
public class FileController {

    @PostMapping("/upload")
    public Result uploadFile(MultipartFile file){
        try {
            //判断文件是否存在
            if(file == null){
                throw new RuntimeException("文件不存在");
            }
            //获取完整名
            String originalFilename = file.getOriginalFilename();

            if(StringUtils.isEmpty(originalFilename)){
                throw new RuntimeException("文件不存在");
            }
            //获取文件内容
            byte[] content = file.getBytes();
            //获取扩展名
            String extName = originalFilename.substring(originalFilename.lastIndexOf(".") + 1);
            //封装上传文件
            FastDFSFile fastDFSFile = new FastDFSFile(originalFilename,content,extName);
            //基于工具类进行文件上传,并接受返回参数  String[]
            String[] uploadResults = FastDFSClient.upload(fastDFSFile);
            //uploadResults[0] 组名  uploadResults[1] 文件名
            String url = FastDFSClient.getTrackerUrl()+uploadResults[0]+"/"+uploadResults[1];
            //封装返回结果
            return new Result(true,StatusCode.OK,"文件上传成功",url);
        } catch (IOException e) {
            e.printStackTrace();
            return new Result(false,StatusCode.ERROR,"文件上传失败");
        }


    }


}
